I agree that their documents provide only the basics. Glad to see you are putting together some documents on this. I wish they would prune out some of the older information on their website as well. Such as the old modules that are years out of date. It gets a bit frustrating to trying to sort through them all.
I have no real experience with module design or the such and rely on people like you Whmcsguru and Zomex among others to help guide me through.
Videos on how to do some of the things involved in securing your whmcs and setting it up would be extremely helpful when someone encounters an issue.
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